tobe1424

Ok so i was in D-series.org and this guy has as a signature a pic of a 3 stage d15b jdm vtec head...ive never heard of any of this ...only thing that comes to my mind in similarity is vtec e...anyone can update me on this or is this sum BS...thanx

Voyage34

yes, there was a version of the d15b that had a 3 stage vtec. it came in the EK3, and was a combination of both vtec and vtec-e.

http://asia.vtec.net/article/d15b/

turboxsi

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Voyage34 &raquo;</TD></TR><TR><TD CLASS="quote">yes, there was a version of the d15b that had a 3 stage vtec. http://asia.vtec.net/article/d15b/</TD></TR></TABLE>

Damn you beat me to it!

Voyage34

with my lightning-fast reflexes that are the complete opposite of my slow-*** car!

turboxsi

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Voyage34 &raquo;</TD></TR><TR><TD CLASS="quote">with my lightning-fast reflexes that are the complete opposite of my slow-*** car! </TD></TR></TABLE>

haha, sorry about the slow *** car, but we all started out there at one point

tobe1424

so since its a combination of both..isnt it better to have vtec alone....better for tunning and crap like that

tobe1424

ok so i read about it...from 3000rpm to 6000 its just basically its like any other vtec sohc motor...and at 6000 vtec kicks in for only 1200rpm?......i think id rather just have a y8 yea or complete motor which allows vtec to kick in earlier. what u guys think...

ccjustin

yea, but i-VTEC is crazy, the camshaft moves too..I can't imagine how many engines they blew up before they got that right

dc2blkR

interesting...

nello a.

efficiency at its best

tobe1424

i vtec has nothing to do with this...thats a new generation of vtec with intellegance...but what i was saying is that you have to wait untill 6000 rpm to fully feel the power of vtec unlike a regular y8 or z6...and yea its probaly more fuel efficient but its not fully vtec you get me...is like a bit more of technology and theory to make that motor more fuel efficient

alpous

i want a 3stage vtec!

Hondaciv95VX

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tobe1424 &raquo;</TD></TR><TR><TD CLASS="quote">ok so i read about it...from 3000rpm to 6000 its just basically its like any other vtec sohc motor...and at 6000 vtec kicks in for only 1200rpm?......i think id rather just have a y8 yea or complete motor which allows vtec to kick in earlier. what u guys think...</TD></TR></TABLE>

Its a normal D series untill "Vtec-e" kicks in, which means its only the exhaust side ports that open, and then you get the real Vtec, which is now the exhaust AND intake ports that are opening now.

Dont take this as 100% accurate, but it is VERY similar to what I have explained.

a2K00

I have a 1.5 1997 3 stage vtec, its wicked, you get power and economy, i can get 80miles on 4 liters of petrol if driven in "ECONO" (lean burn mode) and if i want i can get 68MPH from 2nd gear and 100Mph from 3rd and 119Mph from 4th, what other engine can you get 130Ps and economy of a fiesta, i love it! , Oh and in regards to the other blokes question, Vtec kicks in at 5000Rpm all the way to 7.3000Rpm, just as good as normal vtec engine, plus mine is quicker than my mates standard 1.5Vtec Dseries, And 3 stage is just as tunable, Good ay

jdmwannabe3

I'd rather stick with the y8 which will smack that ne day!

SVOboy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmwannabe3 &raquo;</TD></TR><TR><TD CLASS="quote">I'd rather stick with the y8 which will smack that ne day!</TD></TR></TABLE>

What makes you have the opinion?

schardbody

dude, its basically a lean burn z6, the 12v mode is from idle to 2500rpm, then 16valve mode from 2500 to 5700rpm, then 5700-7200rpm its the high cam lobes. 12valve isnt lean burn, it goes in and out of lean burn very often even in 16valve mode, but not in vtec, or at WOT. it makes the same HP as any other 1.6l sohc vtec engine but gets way more mileage. the only down side is that its an OBD2 engine (known for weak oil pumps) and getting ahold of one of the factory ecu's is a hard thing to do. now that you know your facts dont forget them.

a2K00

No lean burn mode is only when you have the "ECONO" light on the dash to signefy it is running, Learn burn mode never "just comes on" , You can read all you like about the engine, but i have one and i know it well as you can feel it come out of lean burn mode as the power comes back, And as you stated, it has the power of 1.6 Sohc , But remember it isnt a 1.6 its a 1.5, making it in the cheaper tax bracket and insurance group lower, once again saving money, so your gettin just as good performance + economy with cheaper petrol costs,insurance costs and cost of taxing the car, They are the facts

EJ6_ROY

SO you're saying that only the exhaust ports open<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hondaciv95VX &raquo;</TD></TR><TR><TD CLASS="quote">

Its a normal D series untill "Vtec-e" kicks in, which means its only the exhaust side ports that open, and then you get the real Vtec, which is now the exhaust AND intake ports that are opening now.

Dont take this as 100% accurate, but it is VERY similar to what I have explained.</TD></TR></TABLE>


So you're saying that Vtec-e only has exhaust ports opening? Perhaps I misunderstood/ misread this, but in Vtec-e I thought that only one intake valve opened (to save gas) and once vtec actuates, both intake valves opened. sry if I misinterpreted this

schardbody

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by a2K00 &raquo;</TD></TR><TR><TD CLASS="quote">No lean burn mode is only when you have the "ECONO" light on the dash to signefy it is running, Learn burn mode never "just comes on" , You can read all you like about the engine, but i have one and i know it well as you can feel it come out of lean burn mode as the power comes back, And as you stated, it has the power of 1.6 Sohc , But remember it isnt a 1.6 its a 1.5, making it in the cheaper tax bracket and insurance group lower, once again saving money, so your gettin just as good performance + economy with cheaper petrol costs,insurance costs and cost of taxing the car, They are the facts </TD></TR></TABLE>

exactly, but most people think lean burn is anytime during low rpm, you can be cruising at 1400rpm in lean burn, give it a little more gas and still be in 12valve mode but not lean burn. the opposite is also true, you can be cruising at 3200rpm and be in 16valve mode and vtec as long as the throttle is low enough. im w/ you on everything else, im sticking up for this motor.

Sean @ ESG

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ccjustin &raquo;</TD></TR><TR><TD CLASS="quote">I can't imagine how many engines they blew up before they got that right</TD></TR></TABLE>

hahahaha

Braze93civic3stagev-tec

I just tired but i need to know how to connect the flywheel to the automatic transmission is it just bolt on and no alignning or what..i just wanted see if i did it right?This is for a D15b v-tec engine

schardbody

you bolt the flexplate to the crankshaft, then bolt the torque converter to the flexplate, then slide the tranny onto the torque converter.

tatmark1

id say bolt the torque conv. down After bolting tranny on